cecropia, the Cecropia Moth is also known as the Giant Silkworm
Moth and as the Robin Moth. It is the largest moth found in North
America. It is found from the East Coast to the Rocky Mountains.
This moth has a wing span of 5.5 to 6.0 inches. They fly only at
night and are attracted to lights.
have only one generation each year. Adults emerge in the spring.
They live for only one-two weeks. They do not have a mouth and never
feed. Their soul purpose is to lay eggs and produce the next generation.
female can lay more than 100 eggs. The eggs are deposited in small
batches on the under-side of leaves. They are oval, somewhat flattened
and buff to brownish in color. The eggs hatch in about one -two weeks.
The young larvae are black but as they grow they turn yellow. Full
grown larvae are more than four inches long. They are very colorful.
They are light green in color with a bluish tint. Their back and sides
are covered with spiny tubercles (bumps) that are red, yellow and
fully grown the larvae spin a large silk cocoon that is yellow-brown in
color. It is attached to leaves and stems. They pupate and spend the winter
inside the cocoon.
The color pattern
at the edge of the front wing mimics a snake and aids in protecting this
moth from bird predators.